Valve-seat-refacing tool.



.T. W. BROOKS.

' VALVE SEAT REPAGING TOOL.

APPLICATION FILED MAY 1 ,1914.

1, 127,175, Patented Feb. 2, 1915.

mm w. snacks, or stamroma, connndrrcur.

VALVE-SEAT-BEIAOINGF'. Toot.

iaamva,

Taall'whom it may concern-.1

B's-it known that, 1,. Joan W1 B-noons, a citizen o the United- States, residing at Stamfor in. the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Valve- Seat-Refacing- Tools, of which the following is a'specification.

This-invention comprehends certain, new and useful improvements in valve seat refaicing tools and has for its primary object to provide a device of this character which will be of extremely simple construction and operation and composed of the minimum number of parts.

Another object is to provide a device of this character in which the stem will be composed of two sections; with the'blade carrying head secured: between said sections and -serving to connect the same.

A furtherobject of this invention is to provide an improved form of head with blades removably. secured in the same. lVith these and other objects in view as will become more apparent as the description proceeds, the invention consists in certam novel features of construction, combltom plan view of the head removed, Fig. 4

is a top plan view of the intermediate section of the head, with the blades removed,

Fig. 5 is a. detail transverse section on the line 5-'5 of Fig. 1, and Fig. 6 is a detail perspective view of ,one of .thev blades.

Referring in detail to the drawings by numerals, 1 designates the lower section of the stem-which serves to guide the tool dur-.

ing operation of the same, as will be clearly understood, and whichis provided with a reduced threaded upper extremity 2 to receive the lowe section 3 and intermediate or main section 4 of the head of the=tool, it

being understood that the lower section 3 of the head is provided with a central opening to receive the reduced threaded extension 2 and is secured to the bottom of the blade carrying head sectlon 4, by screws or Specification of Letters Patent. PatentedFfil). 2, 1915. Application filed May 19, 1am. Serial no: 839,573;

other suitable securing members 5. It will I also be understood that the blade carrying section 4 is provided with a threaded lonedge of the section 4 to receive the removable val ve engaging blades 8 which are pro-.

vided -with beveled or inclined working edges 9' for engagement with a valve seat for the purpose 0-5 grinding or Refacingthe -sar-ne. Thexblades 8 are retained in position within the-slots 7 by' means of set screws'lO extendingtransversely through the head section'4 and having their ends engaged in socketsulhformed in one side ofvthe blades. 8, suitable recesses 12 being formed in the sides of said section at to accommodate a screw driver or other tool employed for turning the set screws 10. A reduced lower threaded extremity 13 of the upper stem section 14 is alsothreaded in the longitudinal bore 6 of the main portion intermediate the head section 4 and inward movement of said threaded extremity 13 is prevented by the stop shoulder 15 formed in the inner end of said threaded extremity and adapt ed for engagement against the upper face of said section 4. The upper extremity 14 is also provided with an enlarged threaded portion 16 adjacent its lower end and around which is threaded the upper ,head section17' which serves as a jam nut for engagement against the upper face of the main. or intermediate head section 4 and thereby prevent independent rotation of said section 4 and the upper stem section 14. The upper head section 17' or jam nut also serves to bear against the upper end ofthe removable blades -8 and thereby, coiiperate with the lower head section which bears against the lower ends of said blades 8, to securely clamp said blades and prevent movement ofth'e same in the head memher 4. v I

The upper portion '18 of the upper stem section 14 is'p'referably of rectangular form in order thatthe device may be readily se-' cured in. abrace, if desired. The upper portion1-8 is also provided with a transverse opening through which is engaged a handle 19 which may be employed for rotating the device and said handle 19 is secured in ad-- justed position 'by means of .a safs rew;2 1n the upper end of said upper. stem sectloniiengaged' against-oppositefaoes-ofisaidheadandag'ainst the blades tojisecui'e the head .14 and adapted to bear againstfsaid: handle '19 and thereby prevent movement 'ofthe' sainej through the upper, stem section 14. It will "be seen'thatlthe handle 19 may be readily inserted in the .opening provided for the same for removedtherefrom and.

1 when' in position will serve as means; by. which the devicemay be; rotated to. move the blades8 upon the 'valve seat-and therebysmoothand "refaevthe latter. I v

From the foregoing, it will be readily seen that this device, owing 'to the extremely simple construction of the Various parts, may be readily andche aplyi manu-i factured and .will be strong and: durable as Well as highly eflicient in use. i What is claimed is 1. A device of the class described comprising a stem, a guide, said stem and guide having adjacent reduced portions; 2. head mounted upon said. reduced portions and serving to connect said stem and (guide,

said head being'provided ,with bla commodating slots, securing means engaged through said h'ead, 1 blades removably' posi-r tioned in said slots, said securingmeans being engaged: with ,sa1d'blad'es;" and means against movement and prevent movement' of. the blades in said slots? 7 2.;"A device of the class describedpozd.

prising a stem, a head mounted upon said stem and. provided with fadiallfy, (infected slots extending from the'upp'ei" ace to the lowenface of said head, a guide projecting.

from-said head'and in alinement With sai stem, blades secured insaid slots, means for.

preu'enting' Withdrawal .of. said -blades,

means mounted upon said stem and engaged with the head and blades to preventmoveme-11c of the same upon said stein,.means' secured to the head and adapted for' cooperation with the last mentioned m'eans to preventmovement' of the blades, the sec ond mentioned means being mounted. upon the guides, and means for rotating the stem. In te'stimonywh'ereof I aifixmy signature in presence of two itnesses;

i *JOHN .W BROOKS.

Witnesses; I

BENJAMIN H. MEAD, FLoYoB. B RT AM. 

